Yep, I agree with suz, that's the backside of doublecrochet. Dang-nabit wouldn't ya know it!!! Ya find a kewl thing and ya wanna try it out in yer newfound craftiness and, sheesh, it's crocheted.
Dontcha just hate when that happens??
Ah, but alas, all is not lost. Looks kinda like that recycled silk yarn (you know that stuff they make from recycled sari's). It ain't cheap but you could find something similar I would imagine. I would also use "OMG they are comin' this way", size needles (15's or even larger) and just do the scarf thing in garter stitch (knitting every row)
Also, from looking at the pick a little bit more, it sorta looks like log cabin type construction (if you've crocheted those log cabin afghans you should be familiar with it).